Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4977984 | Apparatus and method for detecting elevator car position in a door zone | Hans Bussmann | 1990-12-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4977984 | Apparatus and method for detecting elevator car position in a door zone | Hans Bussmann | 1990-12-18 |